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Request #81244 make *printf() function Unicode-aware
Submitted: 2021-07-11 10:21 UTC Modified: 2021-07-12 13:31 UTC
From: flightvision at googlemail dot com Assigned:
Status: Wont fix Package: *Unicode Issues
PHP Version: 8.0.8 OS:
Private report: No CVE-ID: None
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From: flightvision at googlemail dot com
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 [2021-07-11 10:21 UTC] flightvision at googlemail dot com
The *printf() functions are having problems if strings contain non-ASCII characters.

Test script:
echo sprintf('%3.3s', 'ö12345');
echo sprintf('%3.3s', '12ö345');

Expected result:

Actual result:


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 [2021-07-12 13:31 UTC]
-Status: Open +Status: Wont fix
 [2021-07-12 13:31 UTC]
printf() widths are in terms of bytes, and this isn't going to change. Please use mb_substr() or grapheme_substr() to truncate a string to a certain number of characters, depending on which notion of "character" you wish to use (I would recommend extended grapheme clusters, if you don't want to "truncate" away combining characters etc).
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Last updated: Thu Oct 28 16:03:36 2021 UTC